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 | PUBLICATIONS:
 1. 1959 (with G. Halffter). Nuevas especies mexicanas de Copris (Coleoptera, Scarabaeidae). Ciencia (Mexico) 18: 191-204.
 
 2. 1959. Nueva especie de Copris (Coleoptera, Scarabaeidae) 
                y clave para la determinación de las especies mexicanas del genero. 
                Ciencia (Mexico) 19: 133-136.
 
 3. 1962. A revision of the genus Copris Muller of the 
                Western Hemisphere (Coleoptera, Scarabaeidae). Entomologica Americana 
                41: 1-139.
 
 4. 1963. Observations on the ball-rolling behavior of Canthon 
                  pilularius (L.) (Coleoptera, Scarabaeidae). Psyche 70: 75-93.
 
 5. 1963. Description of the larva and pupa of Cathochilum 
                  histeroides (Harold) with notes on its biology (Coleoptera: 
                Scarabaeidae). Coleopterists' Bulletin 17:110-116.
 
 6. 1965. The taxonomy, geographical distribution, and feeding 
                habits of the canthonines of Puerto Rico (Coleoptera: Scarabaeidae). 
                Transactions of the American Entomological Society 91:431-465.
 
 7. 1966 (with F. de Zayas). Revisión de los cantoninos de Cuba 
                (Coleoptera, Scarabaeidae) con la descripción de seis nuevas especies. 
                Poeyana (La Habana), ser. A, No. 14:1-24.
 
 8. 1966. A taxonomic and zoogeographic survey of the Scarabaeinae 
                of the Antilles (Coleoptera, Scarabaeidae). Memoirs of the American 
                Entomological Society, No. 21:1-312.
 
 9. 1966 (with G. Halffter). The natural history of dung beetles 
                of the subfamily Scarabaeinae (Coleoptera, Scarabaeidae). Folia 
                Entomologica mexicana, Nos 12-14: 1-312. Reprinted in 1999 by 
                Medical Books di G. Cafaro, Palermo, with foreword by Mario Zunino.
 
 10. 1968 (with G. Halffter). New data on American Copris with discussion of a fossil species (Coleoptera, Scarabaeidae). 
                Ciencia (Mexico) 26:147-162.
 
 11. 1969. New data on Antillean scarabaeine beetles, and two new 
                species fom Hispaniola. Psyche 76: 114-125.
 
 12. 1971 (with G. Halffter). The natural history of dung beetles. 
                A supplement on associated biota. Revista latino-americana de 
                Microbiologia 13:147-164.
 
 13. 1972. A revision of the scarabaeine dung beetles of Australia. 
                I. Tribe Onthophagini. Australian Journal of Zoology, Supplementary 
                Series No. 9:1-330.
 
 14. 1973 (with R. M. Emberson). Introduced Scarabaeinae (= Coprinae) 
                (Coleoptera) in New 
                Zealand. The New Zealand Entomologist 5:346-350.
 
 15. 1974. A revision of the scarabaeine dung beetles of Australia. 
                II. Tribe Scarabaeini. Australian Journal of Zoology, Supplementary 
                Series No. 24:1-211.
 
 16. 1976. A revision of the scarabaeine dung beetles of Australia. 
                III. Tribe Coprini. Australian Journal of Zoology, Supplementary 
                Series No. 38:1-52.
 
 17. 1976. La biogeografía ecológica de los escarabajos del estiércol. 
                Acta politécnica mexicana 16: 89-98.
 
 18. 1984. 'A Guide to the Genera of Beetles of South Australia.' 
                Part 3 (Eucinetoidea, Dascilloidea and Scarabaeoidea). Special 
                Educational Bulletin Series, South Australian Museum. Pp. 1-60, 
                100 figs.
 
 19. 1986 (with Z. Stebnicka). A review of Demarziella Balthasar with a transfer from Aphodiinae to Scarabaeinae (Coleoptera, 
                Scarabaeidae). Australian Journal of Zoology 34:449-461.
 20. Matthews, E. G. and Weir, T. 2002. Two new species of the genus Lepanus Balthasar from South Australia (Coleoptera: Scarabaeidae). Records of the South Australian Museum 35(1): 79–84. |